diff options
Diffstat (limited to 'arch/s390/include/asm/smp.h')
| -rw-r--r-- | arch/s390/include/asm/smp.h | 64 |
1 files changed, 50 insertions, 14 deletions
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h index 2ab1141eeb5..4f1307962a9 100644 --- a/arch/s390/include/asm/smp.h +++ b/arch/s390/include/asm/smp.h @@ -1,5 +1,5 @@ /* - * Copyright IBM Corp. 1999,2009 + * Copyright IBM Corp. 1999, 2012 * Author(s): Denis Joseph Barrow, * Martin Schwidefsky <schwidefsky@de.ibm.com>, * Heiko Carstens <heiko.carstens@de.ibm.com>, @@ -7,36 +7,72 @@ #ifndef __ASM_SMP_H #define __ASM_SMP_H -#ifdef CONFIG_SMP - -#include <asm/system.h> #include <asm/sigp.h> -extern void machine_restart_smp(char *); -extern void machine_halt_smp(void); -extern void machine_power_off_smp(void); +#ifdef CONFIG_SMP -#define raw_smp_processor_id() (S390_lowcore.cpu_nr) +#include <asm/lowcore.h> -extern int __cpu_disable (void); -extern void __cpu_die (unsigned int cpu); -extern void cpu_die (void) __attribute__ ((noreturn)); -extern int __cpu_up (unsigned int cpu); +#define raw_smp_processor_id() (S390_lowcore.cpu_nr) extern struct mutex smp_cpu_state_mutex; -extern int smp_cpu_polarization[]; + +extern int __cpu_up(unsigned int cpu, struct task_struct *tidle); extern void arch_send_call_function_single_ipi(int cpu); extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); -extern union save_area *zfcpdump_save_areas[NR_CPUS + 1]; +extern void smp_call_online_cpu(void (*func)(void *), void *); +extern void smp_call_ipl_cpu(void (*func)(void *), void *); + +extern int smp_find_processor_id(u16 address); +extern int smp_store_status(int cpu); +extern int smp_vcpu_scheduled(int cpu); +extern void smp_yield_cpu(int cpu); +extern void smp_yield(void); +extern void smp_cpu_set_polarization(int cpu, int val); +extern int smp_cpu_get_polarization(int cpu); +extern void smp_fill_possible_mask(void); + +#else /* CONFIG_SMP */ + +static inline void smp_call_ipl_cpu(void (*func)(void *), void *data) +{ + func(data); +} + +static inline void smp_call_online_cpu(void (*func)(void *), void *data) +{ + func(data); +} + +static inline int smp_find_processor_id(u16 address) { return 0; } +static inline int smp_store_status(int cpu) { return 0; } +static inline int smp_vcpu_scheduled(int cpu) { return 1; } +static inline void smp_yield_cpu(int cpu) { } +static inline void smp_yield(void) { } +static inline void smp_fill_possible_mask(void) { } #endif /* CONFIG_SMP */ +static inline void smp_stop_cpu(void) +{ + u16 pcpu = stap(); + + for (;;) { + __pcpu_sigp(pcpu, SIGP_STOP, 0, NULL); + cpu_relax(); + } +} + #ifdef CONFIG_HOTPLUG_CPU extern int smp_rescan_cpus(void); +extern void __noreturn cpu_die(void); +extern void __cpu_die(unsigned int cpu); +extern int __cpu_disable(void); #else static inline int smp_rescan_cpus(void) { return 0; } +static inline void cpu_die(void) { } #endif #endif /* __ASM_SMP_H */ |